谁能帮我用英语翻译一下下面这篇文章(下半部分),要精确点的啊,不要那种在线翻译的哦

4.新型数控转台的出现
随着机械工业的发展,数控转台家族的成员在不断增加。为适应现代机床自动夹具的要求,配油式数控转台应运而生。配油式数控转台出现之前,数控机床的自动夹具受管路或线路的限制,不能实现在连续回转的数控转台上安装自动夹具。配油式数控转台在原有转台的基础上增加了配油功能,可以直接向安装在转台台面的不同夹具提供液压油,消除了管路或线路的限制。
配油式数控转台按照配油对象与转台台面连接方式不同,分为:板式连接和管式连接。板式连接:安装在台面上的配油对象不需要再配油管,只需将配油对象的输入油口与转台台面的输出油口对应后固定即可。缺点为,位置固定,内部配油管路复杂。管式连接:安装在台面上的配油对象,通过油管与转台台面的配油器连接实现配油。管式连接对配油对象没有位置限制,并且控制油路可以灵活组合,实现自动夹具的复杂动作。
力矩电动机转台:力矩转台是随着大型力矩电动机的出现而出现的,转台结构因力矩电动机的应用而进一步简化。
力矩电动机转台的结构:力矩电动机的多极定子固定在转台的壳体上,转台的台面与力矩电动机的转子相连,利用力矩电动机直接驱动转台的台面作分度运动便构成了力矩电动机转台。从结构上讲,力矩电动机转台最大可能地缩短了传动链,从而减少了由构成传动链的每个环节的元件的制造误差、安装误差、传动刚性等带来的对转台的不利影响,并且对闭环转台来讲有利于回转编码器或角度编码器与回转部分的连接。
5.评测数控转台的几项指标
评测数控转台的主要指标有:分度精度和重复定位精度、精度保持性、承载能力、密封性能、足够的刹紧力和回转定位速度。
6.数控转台的发展趋势
目前,数控机床的发展趋向于以下几个方面:
高速化——高速机种(每分钟1.5万转以上)。
精密化——随着电脑辅助制造系统的发展,高精度已达到微米级。
高效能——由于产品开发周期愈来愈短,对制造速度的要求也相应提高,机床业朝高效能发展。
系统化——机床已逐渐发展成为系统化产品,用一台电脑控制一条生产线的作业。
复合化——产品对外观曲线要求的提高,机床五轴加工、六轴加工的复合化已是不可避免的发展趋势。
其中“五轴联动数控”是数控技术中难度最大、应用范围最广的技术。它集计算机控制、高性能伺服驱动和精密加工技术于一体,应用于复杂曲面的高效、精密、自动化加工。具体发展趋势为:在规格上向两头延伸,即开发小规格和大规格的数控转台;在性能上进一步提高刹紧力矩、提高主轴转速及可靠性;在蜗杆副传动方面,大幅度提高工作台转速和转台的承载能力;在转台形式方面,继续开发研制两轴联动和多轴并联回转的数控转台。在我国,数控机床与装备的发展亦得到了高度重视,近年来取得了相当大的进步,特别是在通用数控领域,以为平台的国产数控系统,已经逐步缩短了与世界先进水平的差距。作为机床的主要组成部分,分度类机床附件(转台、分度头、刀架)对机床的性能、质量、可靠性起着至关重要的作用。此外,我国制造数字化技术应用水平还比较低。面对这种挑战,我们一方面认识到自己的不足,另一方面要消化、吸收国外的先进技术,缩短与他们之间的差距,致力于解决提高数控设备工业应用水平,实现高速高效加工技术。作为数控转台的开发和生产厂家,在近期的主要任务是进一步开发研制高精度、高刚性、高回转速度的多功能转台。

4.New number control emergence of turn the pedestal
Along with the development of machine industry, number control a member who turn the set household at continuously increment.Is an orientation modern tool machine auto tongs of request, go together with an oil type number to control to turn a pedestal to emerge with the tide of the times.Go together with an oil type number to control to turn before set appear, number control tool machine of auto the tongs be subjected to tube road or circuit of restriction, fall through at continuous turn round of number control to turn on the stage to install auto tongs.Go together with an oil type number to control to turn a pedestal at original turned the foundation of pedestal up the increment to go together with oil function, can direct to install is turn a set pedestal noodles of dissimilarity the tongs provide a liquid to press oil, cancellation tube road or circuit of restriction.
Go together with an oil type number to control to turn a set according to go together with oil object with turn a set pedestal a noodles conjunction a way dissimilarity, is divided into:Plank type conjunction and tube type conjunction.Plank type conjunction:Install at pedestal the go together with of noodles oil object not demand again go together with pipeline, need will go together with oil object of importation oil with turn a set pedestal noodles of output oil rightness should empress fix then.Weakness is, position fix, the inner part go together with pipeline road complications.Tube type conjunction:Install the go together with of noodles oil object at the pedestal, pass pipeline with turn a set pedestal the go together with of noodles oil machine a conjunction realization to go together with oil.Tube type conjunction have no position restriction towards going together with oil object, and control the oil road can be vivid combination, realization auto complications of the tongs action.
The dint Ju electric motor turn Taiwan:The dint Ju turn a set is along with large dint Ju the emergence of the electric motor but appear, turn set structure because of dint Ju electric motor of application but further simplification.
The dint Ju electric motor turn the structure of pedestal:Dint Ju electric motor of many the pole settle son fix on the hull body of turn the pedestal, turn the pedestal of pedestal turn of noodles and dint Ju electric motor son connect with each other, make use of dint Ju electric motor direct drive pedestal noodles of turn the pedestal to make cent degree sport then constitute dint Ju the electric motor turn Taiwan.Speak from the structure, the dint Ju electric motor turn a set biggest probably shortenned to spread to move a chain, thus decrease from constitute spread the component of each link of move the chain of manufacturing error margin, install error margin, spread to move rigid etc. to bring of to turn a pedestal of disadvantageous influence, and to shut wreath to turn a pedestal to speak to be advantageous to turn-over coder or angle coder and turn round part of conjunction.
5.A few index sign reviewed to measure a number to control to turn a pedestal
The main index sign which review to measure a number to control to turn a pedestal have:Cent degree accuracy with repeated fixed position the accuracy, accuracy keep sex, loading ability, seal completely function, enough of Cha tight dint and turn round fixed position speed.
6.Number control development trend of turn the pedestal
Currently, number control the development of tool machine to incline toward the following a few aspect:
The high speed turn-high speed model.(every minute 15,000 turn above)
The nicety turn-along with computer-aided manufacturing system of development, Gao accuracy already arrive micron class.
High performance-because of product development the period be shorter and shorter, to manufacturing speed of request also correspond exaltation, tool machine industry dynasty high performance development.
Systematize-tool machine already the gradual development become systematizing a product and use a set computer control a homework of production line.
Compound turn-product outward view curve request of exaltation, tool machine five stalks process, six stalk process of compound turn to is already ineluctable development trend.
Among them"five stalks be allied to move number to control" is number control the difficulty in the technique biggest, application the most wide technique.It gather a calculator a control, the high performance be servo to drive with nicety the processing technology is at the integral whole, application in complications curved face of efficiently, nicety, automation process.The concrete development trend is:On the specification to two extension, then develop small specification and big specification of number control to turn Taiwan;Further exaltation on the function Cha tight dint Ju, exaltation the principal axis turn soon and credibility;Spread to move aspect at the Gua pole pair, significant exaltation work the set turn soon with turn a pedestal of loading ability;Continue in the aspects of turning a set form the development develop two stalks allied move with many the stalk merge turn round of number control to turn Taiwan.At our country, number control tool machine and material of development also got height value, obtained in recent years equal big of progress, especially at in general use number control realm, think terrace of domestic number control system, have already gradually shortenned with world forerunner level of margin.Be a tool machine of main constitute part, cent degree tool machine the enclosure(turn Taiwan, cent degree head, knife) have to the pass to the function, quality, credibility of tool machine importance of function.In addition, our country manufacturing numeral turn a technique application level still lower.Face this kind of challenge, we on the other hand understanding arrive oneself of shortage, want digest and absorb on the other hand abroad of forerunner technique, shorten and they it the margin of , concentrate on solving exaltation number to control an equipments industry application level, realization high speed efficiently processing technology.Be number control to turn a pedestal of development and produce factory house, the main mission be further development to develop in the near future Gao accuracy, Gao rigid and high turn round speed of multi-function turn Taiwan.
就这样
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第1个回答  2010-05-19
楼主做美梦吧
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